Is that picture what it seems? Shadow Witness helps you see the evidence, not a guess.

Pick a photo, a download or a screenshot. The app examines the picture itself on your phone and shows you, drawn over your own image, where something does not follow the rules a real camera and real light obey — and where it does.

WHAT YOU GET
• Findings drawn on your picture, each with a plain-language explanation of what was checked and what can make it wrong.
• "Check it yourself": hands-on tools right at the top of every report, each saying when to use it.
• No score and no verdict. The app reports observations; you decide what they mean.

FREE, WITH AN OPTIONAL PRO UNLOCK
• Every automatic check is free, with no time limit.
• The Enhance lens is free: magnify any spot of the picture with extra contrast and detail.
• A one-time Pro purchase adds the rest of the hands-on tools: mark shadows, reflections, eyes, pupils, rounded objects, white things, people against the horizon, straight lines and focus, and the app tells you whether they agree with one real scene. Pro also keeps unlimited scan history. No subscription.

PRIVATE BY DESIGN
• Every check runs on your phone.
• The app has no internet permission and shows no permission prompts.
• It keeps no copy of your pictures. A short scan history stays on your phone and can be cleared at any time.
• No accounts, no ads, no tracking. Purchases are handled by Google Play.

GOOD TO KNOW
These are observations, not proof. Each check tests one rule a real picture obeys; heavy editing, compression, unusual lighting or lenses can make a real photo disagree, and a generated image can pass. This app cannot definitively determine whether media is authentic or AI-generated.